Intake



Sept. 6 1927. l 1,641,670

G. M. FRENCH INTAKE Filed Aug. 14. 1 926 i l l l l l l I l l I 'lPatented Sept. I

PATENT orificecnonen msnen. FRENCH, or sr.' Josnrn, uranium.

INTAKE.

Application :tiled August 14, 1926. Serial No.'129,151.

This 'invention relates .I to an intake through which water may be drawnVfrom the sea for any desired use on boardv ship, as, for example, forsupplying water for the water jacket of a marine internal combustionengine. Itis' usual to connect the inlet side lof the pump with anopening. in the hull, the. opening being covered by a strainer.' Theinlet opening being rather small,'the velocity a opening is relativelyhigh, with a consequent tendency to pick .up dbris and thus clog thestrainer. The strainer not being conveniently accessible, it isAimpracticable to keep the strainer clean.

Among the objects .of the present inven- 'tion are topprovide an intakelwhich shall permit the entrance of water at relatively` low velocity,which shall permit oit-the use of a' relatively large screen and thusrender practicable theuse of a finer screen than has heretoforebeenpermissible, and which shall give ready access to the screenforcleaning `or inspection. v

In the 'accompanying drawings, Figure- 1 is a vertical sectional view ofan 'intake embodyingthe features of my invention, the' i .intake beingshown inoperative relation to Fig. 2 is a view 2-2 of Fig. 1. l v. s

Fig. 3 is an underside view of the water inlet.

taken in the plane of line Fig. 4 is a section on 'line y1 -f4 of Fig.3.

Fig. 5 is -a fragmental view illustrating analternative construction. v'Y In Figure 1, the hull or skin of a motor boat is indicated 'at A. 1denotes an lclone gated vertically disposed casing tapering to'- wardits 'upper end. Inthe forni herein shown, the casing 1 is rectangular incrosssection. The lower end of the casing 1. is provided with flanges 2by means .of which the casing is secured to thevinner side of the bottomof the hull in registry with an opening A extending through the hull.The 'opening A is vbelow-'the water line. The

.' casing `-1 extends above the water, line, its

' having upper Yend b eing closed by'a water tight clsure,`as forexample, a plate. 3 secured in lace by screws 4..' The lower or outer-en of the opening A is covered by a strainer or grating consisting jo'fa plate 5 water linlet openings 6 therein. The

casing 1 the strainer plate 5 are secured ofthe water entering the.

in place by means of screws 7 or any other suitable means.

speed boat, a scoop 7e (Fig. 5) ot' common form may be used, if desired.

A screen or strainer 8 extends longitudinally of the casing land dividesthe space said casing into two compartments, one of which communicateswith the. inlet open- .As will be apparent from Fig. 1, all vwater mustpass through the screen 8 in order to When. installed upon a.

The lower .end of the screen rests' reach the suction opening 10. ltwill be"- seen that upon removing the cap 3, -the op-a erator may takehold. of the 'upper end ofI the screen 8 and withdraw it from the casing1 for inspection .or cleaning. g The openings A and 9 are ,relativelylarge as compared with the intake opening heretofore commonly used,water enters the casing 1 at relatively 'low velocity and thereforethere lis less tendency `to pick up dbris. The strainer or. grating.

5 may be relatively coa-rse, as'it. is not solely vdepended .upon tokeep-dbris out of the` system. Because of the relative coarseness A -ofthe strainer 5, and the fact that the opening Ay is considerably largerthan the suction openinglO, water Hows through-the strainer 5' underrelatively low velocity,

hence there is little tendency vfor dbris to cling to the strainer,

Byreason of the .size of the scrcn 8 it is practicable to use airelatively 'small-mesh wire fabric, thus eifectively excluding dbrisfrom the system without so restricting the passage as lto cause thewater to 'flow consequently icawith high velocity. Due' to therelatively. l vlow velocity of the water flowing throng the screen 8,dbris has little orno tendency to clingv to the screen, but on thecontrary, "w

tends to fall out through the openings. 9 and A when the engine sto s'.l believe myself to be t e which permits access to' the strainer fromwithin the boat. It will be apparentthat first to .proi l duce a form ofintake for marine' purposes no -v the strainer may be removedforlinspection 'or cleaning while the `vessel is in the water.

I claim as my invention:

1. The combination of a hull having an o ening below the wate'i` line,la vertically e ongated casing within the hull, the lower end of saidvcasing communicating with` said opening and the upper end of the casingextending above the |water line, and an elongated .strainer-extendingjrom a point 'ad- Jacent to said opening to a point above thewater line, said casing having .a suction o ening in its lower portionat the side of t e screen opposite to the rst mentioned I openingproviding a water inlet below the water line, a casing within thek hull,the lower vend` of said casing communicating with said opening and'the.upperend of the casing extending above the water line, said casinghaving a suction openingin its lower portion, the area of said suctionopening being smaller than the area of the water inlet, and a strainerinterposed between the water inlet and the suction'opening.

4. The combination of a hull having `an opening therethrough below thewater line,

a strainer covering the outer end.Y of the opening, a casing-withinthehull having an opening communicating with the opening in g. '3. Thecombination of a hull having an the hull, said casing having a suction.opening, and a strainer located within the casing and interposed betweenthe second menf tioned -openin and the suction opening.

5. The com ination of a hull having an opening therethrough below the.water line,

a relatively coarse strainer covering the outer end ofthe opening, acasing within the hull in communication with said opening, said casinghaving a suction opening in its lower portion, and a relatively'inestrainer within 'the casing and'interpo'sed between the opening in thehull and the suction opening.

6.. The combination 'of a hull having a water inlet opening below thewater line,-

a casing. within the hull-communicating with said opening and extendingabove the'water line, a water-tight closureA for the casing,

and' a 'strainer Within the casing, said strainer being removablethrough-the upper end of vthe casing upon removal `of saidv closure.

7 .The combination, witha hull, of waterJ intake means connected tothehull below the water line and open at all times to thev iiigress 'ofwater, and comprising, a strainen located within the water intake means,s aid water intake means having ana opening through which the straineris withdawable,v

8. The combination of a hull having an opening providing a water inlet`below the,

water line, a casing communicating 4with the inlet and,` having asuctionopening 4oil'l smaller area than th@ inlet, and a strainer'interposedy between the inlet vand the suc-` tion opening, saidstrainerv being of larger area thanthe inlet. j

' In testimonywhereof, I have hereunto aliXed my signature. v Y

GEORGE MARSHALL FRENCHQ*

